3g-3=21-3g

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Solution for 3g-3=21-3g equation:


Simplifying
3g + -3 = 21 + -3g

Reorder the terms:
-3 + 3g = 21 + -3g

Solving
-3 + 3g = 21 + -3g

Solving for variable 'g'.

Move all terms containing g to the left, all other terms to the right.

Add '3g' to each side of the equation.
-3 + 3g + 3g = 21 + -3g + 3g

Combine like terms: 3g + 3g = 6g
-3 + 6g = 21 + -3g + 3g

Combine like terms: -3g + 3g = 0
-3 + 6g = 21 + 0
-3 + 6g = 21

Add '3' to each side of the equation.
-3 + 3 + 6g = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 6g = 21 + 3
6g = 21 + 3

Combine like terms: 21 + 3 = 24
6g = 24

Divide each side by '6'.
g = 4

Simplifying
g = 4

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